Rescue workers have pulled out 91 bodies out of the debris of the building till 5:50 pm on Thursday and continued to search for more survivors trapped inside the rubble, an official said.

Army Brig Gen Mohammed Siddiqul Alam Shikder on Thursday morning told media that more people are still trapped under the debris.

The Army, police and fire fighters are conducting rescue operations. They said the death toll might increase as many people are feared trapped under the debris.

Bangladesh is observing national mourning day on Thursday in memory of the victims.

"Meanwhile, Dhaka District Administration formed a probe panel to ascertain the cause of the collapse. Additional District Magistrate Monoj Kumar Roy will head the panel. It has been asked to submit the report within 15 working days," bdnews24.com reported.

The building, which housed a market, several garment factories and a branch of Brac Bank, collapsed at around 8:45 am.

The injured people were taken to Enam Medical College and Hospital in Savar.

Bangladesh Prime Minister Sheikh Hasina had directed local administration to carry out the rescue operation on a war footing.

She said her government will provide the affected people with food, shelter, relief and necessary rehabilitation facilities.

Bangladesh Home Minister Mohiuddin Khan Alamgir visited the spot of the accident on Wednesday.

Opposition leader Khaleda Zia's Bangladesh Nationalist Party (BNP)-led 18-party opposition alliance had withdrawn its shutdown in Dhaka district and metropolitan area after the incident.